added some scalar functions, a stored procedure and a table

functions-scalar/dbo.ObsfucateIPAddress.sql

@@ -0,0 +1,25 @@
+CREATE OR ALTER FUNCTION dbo.ObsfucateIPAddress(@String NVARCHAR(MAX))
+RETURNS NVARCHAR(MAX)
+AS
+/*************************************************************************************************
+AUTHOR: Patrick Hurst
+CREATED: 20220414
+    Obsfucates the provided IP by returning the first digit of each octet and replacing the 
+	rest with Xs
+PARAMETERS:
+    @String - the IP Address to obsfucate
+EXAMPLES:
+*   dbo.ObsfucateIPAddress('192.168.1.10') --> 1XX.1XX.1.1X
+**************************************************************************************************
+MODIFICATIONS:
+    YYYYMMDD - 
+**************************************************************************************************
+
+*************************************************************************************************/
+  BEGIN
+    DECLARE @return NVARCHAR(MAX)
+    SELECT @return = STRING_AGG(LEFT(value,1) +COALESCE(REPLICATE('X',LEN(Value)-1),''), '.')
+	  FROM string_split(@String,'.')
+	RETURN @return
+  END
+  GO

functions-scalar/dbo.ObsfucateString.sql

@@ -0,0 +1,25 @@
+ CREATE OR ALTER FUNCTION dbo.ObsfucateString(@String NVARCHAR(MAX))
+ RETURNS NVARCHAR(MAX)
+ AS
+/*************************************************************************************************
+AUTHOR: Patrick Hurst
+CREATED: 20220414
+    Obsfucates the provided string by returning the first two characters of any word, and 
+	replacing the rest with Xs
+PARAMETERS:
+    @String - the string to obsfucate
+EXAMPLES:
+*   dbo.ObsfucateString('John Smith') --> JoXX SmXXX
+**************************************************************************************************
+MODIFICATIONS:
+    YYYYMMDD - 
+**************************************************************************************************
+
+*************************************************************************************************/
+  BEGIN
+    DECLARE @return NVARCHAR(MAX)
+    SELECT @return = STRING_AGG(LEFT(value,2) +COALESCE(REPLICATE('X',LEN(Value)-2),''), ' ')
+	  FROM string_split(@String,' ')
+	RETURN @return
+  END
+GO

functions-scalar/dbo.ObsufcateEmail.sql

@@ -0,0 +1,26 @@
+CREATE OR ALTER FUNCTION dbo.ObsufcateEmail(@Email NVARCHAR(100))
+RETURNS NVARCHAR(100)
+AS
+/*************************************************************************************************
+AUTHOR: Patrick Hurst
+CREATED: 20220414
+    Obsfucates the provided Email address by returning the first two characters of the user name,
+	the first two characters of the domain and the complete TLD. If the value does not contain a 
+	@ calls dbo.ObsfucateString instead.
+PARAMETERS:
+    @Email - the Email Address to obsfucate
+EXAMPLES:
+*   dbo.ObsufcateEmail('[email protected]') --> [email protected]
+**************************************************************************************************
+MODIFICATIONS:
+    YYYYMMDD - 
+**************************************************************************************************
+
+*************************************************************************************************/
+  BEGIN
+   DECLARE @return NVARCHAR(100)
+   SELECT @return = CASE WHEN CHARINDEX('@', @Email) > 1 THEN REPLACE(LEFT(@Email,2),'@','')    +COALESCE(REPLICATE('X',CHARINDEX('@',@Email)-3),'')+'@'+
+   LEFT(RIGHT(@Email,LEN(@Email)-CHARINDEX('@',@Email)),2)+REPLICATE('X',CHARINDEX('.',RIGHT(@Email,LEN(@Email)-CHARINDEX('@',@Email)-3)))+
+   RIGHT(@Email,LEN(RIGHT(@Email,LEN(@Email)-CHARINDEX('@',@Email)))-CHARINDEX('.',RIGHT(@Email,LEN(@Email)-CHARINDEX('@',@Email)))+1) ELSE dbo.ObsfucateString(@Email) END
+   RETURN @return
+  END

stored-procedures/dbo.MaintenanceModeToggle.sql

@@ -0,0 +1,59 @@
+CREATE OR ALTER PROC dbo.MaintenanceModeToggle (
+@Bit BIT, 
+@DatabaseName NVARCHAR(128) = NULL, 
+@AvailabilityGroup NVARCHAR(128) = NULL, 
+@ServerName NVARCHAR(128) = NULL
+)
+AS
+/*************************************************************************************************
+AUTHOR: Patrick hurst
+CREATED: 20220414
+
+PARAMETERS
+* @Bit - maintenance mode on (1) or off (0)
+  @DatabaseName (NULL/optional) the name of the single database to toggle
+  @AvailabilityGroup (NULL/optional) the name of the availability group to toggle all databases
+  @ServerName (NULL/optional) the name of the server to toggle all databases
+**************************************************************************************************
+MODIFICATIONS:
+       YYYYMMDDD - Initials - Description of changes
+**************************************************************************************************
+
+*************************************************************************************************/
+BEGIN
+ IF @bit = 1
+ BEGIN
+  INSERT INTO dbo.MaintenanceModeDatabases 
+  SELECT d.name, SYSTEM_USER, GETUTCDATE()
+    FROM master.sys.databases d
+  	LEFT OUTER JOIN sys.dm_hadr_cached_database_replica_states rs
+  	  ON d.name = rs.ag_db_name
+  	  AND rs.is_local = 1
+	LEFT OUTER JOIN MaintenanceModeDatabases mmd
+	  ON d.name = mmd.DatabaseName 
+   WHERE ((
+              (@databaseName IS NULL or @databaseName = d.name)
+  		AND (@availabilityGroup IS NULL OR @availabilityGroup = rs.ag_name)
+  		AND @ServerName IS NULL
+  	   )
+     OR (@serverName IS NOT NULL))
+	AND mmd.DatabaseName IS NULL;
+ END;
+ IF @bit = 0
+ BEGIN
+  DELETE mmd
+    FROM dbo.MaintenanceModeDatabases mmd
+  	LEFT OUTER JOIN sys.dm_hadr_cached_database_replica_states rs
+  	  ON mmd.DatabaseName = rs.ag_db_name
+  	  AND rs.is_local = 1
+   WHERE (
+              (@databaseName IS NULL or @databaseName = mmd.DatabaseName)
+  		AND (@availabilityGroup IS NULL OR @availabilityGroup = rs.ag_name)
+  		AND @ServerName IS NULL
+  	   )
+     OR (@serverName IS NOT NULL);
+ END;
+END;
+GO
+
+

tables/dbo.MaintenanceModeDatabases.sql

@@ -0,0 +1,11 @@
+
+IF EXISTS (SELECT 1 FROM sys.tables t INNER JOIN sys.schemas s ON t.schema_id = s.schema_id WHERE t.name = 'MaintenanceModeDatabases' AND s.name = 'dbo') DROP TABLE dbo.MaintenanceModeDatabases;
+CREATE TABLE MaintenanceModeDatabases (
+	DatabaseName NVARCHAR(128), 
+	AddedByUser NVARCHAR(100), 
+	AddedDateTimeUTC DATETIME DEFAULT GETUTCDATE()
+	);
+GO
+
+
+